By highlighting the effects of social interactions on cognitive development , Vygotsky reveals a critical role that external activities play in sparking internal mental constructions . Understanding this interplay , as t indicated above , is at the heart of constructionism 's paradigm . Although these internal and external dynamics are cyclic , Vygotsky clearly views the external component (the shared and communicated experiences ) as being primary in many key instances , in that they initiate certain critical internal components through the process of internalization ( HYPERLINK "http...











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